| Uitslagen van externe ronde 4 | 26-11-2017 |
| 1 | Pieter | Verhoef | Z | 0-1 | 2002 |
| 2 | Peter | Boel | W | 0-1 | 2385 |
| 3 | Bob | Beeke | Z | ˝-˝ | 2305 |
| 4 | Otto | Wilgenhof | W | 0-1 | 2306 |
| 5 | Tom | Bus | Z | 1-0 | 2203 |
| 6 | Wouter van | Rijn | W | 1-0 | 2238 |
| 7 | Eelco de | Vries | Z | 1-0 | 2153 |
| 8 | Michiel | Blok | W | 1-0 | 2128 |
| 9 | Sander | Berkhout | Z | 0-1 | 2191 |
| 10 | Murat | Duman | W | ˝-˝ | 2061 |
| 1 | Frank | Schleipfenbauer | Z | ˝-˝ | 2067 |
| 2 | Richard van der | Wel | W | 0-1 | 2002 |
| 3 | Sjoerd van | Roosmalen | Z | ˝-˝ | 1816 |
| 4 | Jan | Knuiman | W | 1-0 | 1866 |
| 5 | Mick Van | Randtwijk | Z | 0-1 | 1952 |
| 6 | Fred | Reulink | W | 1-0 | 1688 |
| 7 | Nurzhan | Khamiyev | Z | 1-0 | 1699 |
| 8 | Daan | Holtackers | W | 0-1 | 1663 |
| 1 | Jan van de | Linde | Z | ˝-˝ | 1975 |
| 2 | Johan | Wolbers | W | 1-0 | 1846 |
| 3 | Remco | Gerlich | Z | 1-0 | 1996 |
| 4 | Wouter | Abrahamse | W | ˝-˝ | 1968 |
| 5 | Freek | Hooning | Z | 0-1 | 1925 |
| 6 | Anne Paul | Taal | W | 0-1 | 1970 |
| 7 | Barth | Plomp | Z | 0-1 | 1825 |
| 8 | Quirine | Naber | W | 1-0 | 1913 |
| 1 | Bert | Duijker | Z | ˝-˝ | 1896 |
| 2 | Paul de | Freytas | W | ˝-˝ | 1891 |
| 3 | Désiré | Fassaert | Z | ˝-˝ | 1848 |
| 4 | Ruud | Wille | W | 0-1 | 1842 |
| 5 | Gerben | Hendriks | Z | ˝-˝ | 1987 |
| 6 | Steven | Braun | W | 0-1 | 1817 |
| 7 | Ruud | Verhoef | Z | 1-0 | 1769 |
| 8 | Ivo van der | Gouw | W | ˝-˝ | 1781 |